Chongjin Song, Hongxia Xi, Jun Cao, Haibo Qu, Li Chen, Yan Liu, Junjie An. Influence of Locally Concentrated Stress in Quartz on Precision of Digital Sun Sensors[J]. Laser & Optoelectronics Progress, 2018, 55(6): 061601
- Laser & Optoelectronics Progress
- Vol. 55, Issue 6, 061601 (2018)
Fig. 1. Working principle for four-holes APS sun sensor
Fig. 2. Schematic of optical structure for digital sun sensor
Fig. 3. Impact of interference spot on centroid
Fig. 4. Schematic of optical path for quarter-wave plate method
Fig. 5. Stress distribution of different quartz specimens. (a) 1#; (b) 2#; (c) 3#; (d) 4#
Fig. 6. Schematic of calibration system for sun sensor
Fig. 7. Light spot images of different quartz specimens when azimuthal angle is 40° and pitch angle is 10°. (a) 1#; (b) 2#; (c) 3#; (d) 4#
Fig. 8. Light spot images of different quartz specimens when azimuthal angle is 40° and pitch angle is 20°. (a) 1#; (b) 2#; (c) 3#; (d) 4#
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Table 1. Levels of stress birefringence of JGS1 quartz materials[5]
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Table 2. Range of interference spot in full visual field
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